1025111489 has 4 divisors (see below), whose sum is σ = 1042486320. Its totient is φ = 1007736660.

The previous prime is 1025111453. The next prime is 1025111497. The reversal of 1025111489 is 9841115201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1025111489 - 2¹² = 1025107393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025111089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8687327 + ... + 8687444.

It is an arithmetic number, because the mean of its divisors is an integer number (260621580).

Almost surely, 2^1025111489 is an apocalyptic number.

It is an amenable number.

1025111489 is a deficient number, since it is larger than the sum of its proper divisors (17374831).

1025111489 is an equidigital number, since it uses as much as digits as its factorization.

1025111489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17374830.

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 1025111489 is about 32017.3623054742. The cubic root of 1025111489 is about 1008.3013925239.

The spelling of 1025111489 in words is "one billion, twenty-five million, one hundred eleven thousand, four hundred eighty-nine".